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首页> 外文期刊>Engineering >Investigation of Viscosity's Effects on Continuous Casting of Steel Mold Powders Containing B2O3, Li2O, TiO2, Fe2O3, ZnO and Na2O
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Investigation of Viscosity's Effects on Continuous Casting of Steel Mold Powders Containing B2O3, Li2O, TiO2, Fe2O3, ZnO and Na2O

机译：粘度对含B2O3，Li2O，TiO2，Fe2O3，ZnO和Na2O的铸型保护渣连续铸造的影响

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摘要

Mold powders are mainly formed of such oxides as SiO2, CaO, Al2O3, Na2O along with F and C. One of the main constitutional composes of mold powders is F, which is utilized in chemical composition of mold powders due to its features of controlling viscosity and producing desired lubrication between solidified steel shell and mold. However, the emission of F through such compositions as HF (g) causes health and environmental problems. The purpose of this research is to decrease, and subsequently substitute, F in chemical composition of a lubricating high speed powder, which is used in continuous casting of steel industry. A combination of Fe2O3 and TiO2 compositions to substitute F in chemical composition of a fluorine-free mold powder was used to meet the purposed of this research. In addition, nine powder samples (A-I) with laboratory scale were prepared. In order to evaluate the samples’ viscosity behavior, groove viscometer test and image analysis software was used and to evaluate the crystalline behavior of samples C and G, XRD and SEM analyses were conducted. The results of these analyses demonstrated that the fluorine-free sample, due to its viscosity resemblance in comparison with molten reference powder and through creation of such crystalline phases as Perovskite (CaTiO3) and Fayalite (Fe2SiO4), will result in viscosity control of the mold powder and therefore optimizing continuous casting conditions. Finally, it is possible to derive that this sample may be an appropriate substitution for the reference powder being utilized in steel continuous casting industry.
机译：防霉粉主要由SiO2，CaO，Al2O3，Na2O等氧化物以及F和C组成。防霉粉的主要组成成分之一是F，由于其具有控制粘度的特性，因此用于防霉粉的化学组成中并在凝固的钢壳和模具之间产生所需的润滑。然而，通过诸如HF（g）之类的组合物释放F会引起健康和环境问题。这项研究的目的是减少并随后替代润滑高速粉末的化学成分中的F，该粉末用于钢铁工业的连续铸造。用Fe2O3和TiO2组合物代替无氟防霉粉化学成分中的F可以满足本研究的目的。另外，制备了具有实验室规模的九个粉末样品（A-1）。为了评估样品的粘度行为，使用了凹槽粘度计测试和图像分析软件，并评估了样品C和G的结晶行为，并进行了XRD和SEM分析。这些分析的结果表明，由于无氟样品与熔融参考粉末相比具有相似的粘度，并且通过形成钙钛矿（CaTiO3）和铁橄榄石（Fe2SiO4）等结晶相，可以控制模具的粘度。粉末，因此优化了连续铸造条件。最后，可以推断出该样品可以替代钢连续铸造工业中使用的参考粉末。

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